Based On TRNSYS Software Building Ground Source Heat Pump System Model And Application

Ground source heat pump is widely used in building heating and cooling, the aim is to aenieve energy saving and environmental protection. Using TRNSYS software to building a ground source heat pump system model, simulation the run status of the heat pump in the long-term heating and cooling conditions.First, using TRNSYS software establish a ground source heat pump model. Including heat pump units, chilled water pumps, cooling water pumps, underground pipe system and the end of the system and other modules to build a ground source heat pump system model; use of existing test stand, in the winter some day do heating tests. Record experimental data, and put the test data into the model, the use of TRNSYS simulation test bench, compared to the change of room temperature, change of import and export of condenser and evaporator temperature, the heat capacity of the ground source heat pump and absorption heat from the soil, as well as units simulation and experimental values of the power and the coefficient of performance, do all this to verify the correctness of the model; And then simulate the existing building, through a typical day indoor temperature and power instantaneous value to verify the feasibility of the simulation of the building, in winter simulation ground source heat pump systems heating conditions120days and in summer simulation ground source heat pump systems cooling conditions90days, simulation the change of an indoor temperature, changes of condenser and evaporator inlet and outlet temperature, ground source heat pump heating capacity or cooling capacity, and capability of heat absorption and released to soil, and the change of unit power and heat pump coefficient. Then simulations a10-year consecutive run to identify the long-running problems and proposed solution, the last put forward energy saving reform project, and simulation changes of the power when change the indoor temperature, study of indoor temperature on the system energy saving effect. The final analysis of different wall and the thickness of the insulation layer and different window types on the impact of energy saving.